crypto: sha3 - Add SHA-3 hash algorithm (53964b9e) · Commits · 戴 / test

crypto/Kconfig

+10 −0

Original line number	Diff line number	Diff line
		@@ -750,6 +750,16 @@ config CRYPTO_SHA512_SPARC64
		SHA-512 secure hash standard (DFIPS 180-2) implemented
		using sparc64 crypto instructions, when available.

		config CRYPTO_SHA3
		tristate "SHA3 digest algorithm"
		select CRYPTO_HASH
		help
		SHA-3 secure hash standard (DFIPS 202). It's based on
		cryptographic sponge function family called Keccak.

		References:
		http://keccak.noekeon.org/

		config CRYPTO_TGR192
		tristate "Tiger digest algorithms"
		select CRYPTO_HASH

crypto/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -61,6 +61,7 @@ obj-$(CONFIG_CRYPTO_RMD320) += rmd320.o
		obj-$(CONFIG_CRYPTO_SHA1) += sha1_generic.o
		obj-$(CONFIG_CRYPTO_SHA256) += sha256_generic.o
		obj-$(CONFIG_CRYPTO_SHA512) += sha512_generic.o
		obj-$(CONFIG_CRYPTO_SHA3) += sha3_generic.o
		obj-$(CONFIG_CRYPTO_WP512) += wp512.o
		obj-$(CONFIG_CRYPTO_TGR192) += tgr192.o
		obj-$(CONFIG_CRYPTO_GF128MUL) += gf128mul.o

crypto/sha3_generic.c

0 → 100644

+300 −0

Original line number	Diff line number	Diff line
		/*
		* Cryptographic API.
		*
		* SHA-3, as specified in
		* http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.202.pdf
		*
		* SHA-3 code by Jeff Garzik <jeff@garzik.org>
		*
		* This program is free software; you can redistribute it and/or modify it
		* under the terms of the GNU General Public License as published by the Free
		* Software Foundation; either version 2 of the License, or (at your option)•
		* any later version.
		*
		*/
		#include <crypto/internal/hash.h>
		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/types.h>
		#include <crypto/sha3.h>
		#include <asm/byteorder.h>

		#define KECCAK_ROUNDS 24

		#define ROTL64(x, y) (((x) << (y)) \| ((x) >> (64 - (y))))

		static const u64 keccakf_rndc[24] = {
		0x0000000000000001, 0x0000000000008082, 0x800000000000808a,
		0x8000000080008000, 0x000000000000808b, 0x0000000080000001,
		0x8000000080008081, 0x8000000000008009, 0x000000000000008a,
		0x0000000000000088, 0x0000000080008009, 0x000000008000000a,
		0x000000008000808b, 0x800000000000008b, 0x8000000000008089,
		0x8000000000008003, 0x8000000000008002, 0x8000000000000080,
		0x000000000000800a, 0x800000008000000a, 0x8000000080008081,
		0x8000000000008080, 0x0000000080000001, 0x8000000080008008
		};

		static const int keccakf_rotc[24] = {
		1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 2, 14,
		27, 41, 56, 8, 25, 43, 62, 18, 39, 61, 20, 44
		};

		static const int keccakf_piln[24] = {
		10, 7, 11, 17, 18, 3, 5, 16, 8, 21, 24, 4,
		15, 23, 19, 13, 12, 2, 20, 14, 22, 9, 6, 1
		};

		/* update the state with given number of rounds */

		static void keccakf(u64 st[25])
		{
		int i, j, round;
		u64 t, bc[5];

		for (round = 0; round < KECCAK_ROUNDS; round++) {

		/* Theta */
		for (i = 0; i < 5; i++)
		bc[i] = st[i] ^ st[i + 5] ^ st[i + 10] ^ st[i + 15]
		^ st[i + 20];

		for (i = 0; i < 5; i++) {
		t = bc[(i + 4) % 5] ^ ROTL64(bc[(i + 1) % 5], 1);
		for (j = 0; j < 25; j += 5)
		st[j + i] ^= t;
		}

		/* Rho Pi */
		t = st[1];
		for (i = 0; i < 24; i++) {
		j = keccakf_piln[i];
		bc[0] = st[j];
		st[j] = ROTL64(t, keccakf_rotc[i]);
		t = bc[0];
		}

		/* Chi */
		for (j = 0; j < 25; j += 5) {
		for (i = 0; i < 5; i++)
		bc[i] = st[j + i];
		for (i = 0; i < 5; i++)
		st[j + i] ^= (~bc[(i + 1) % 5]) &
		bc[(i + 2) % 5];
		}

		/* Iota */
		st[0] ^= keccakf_rndc[round];
		}
		}

		static void sha3_init(struct sha3_state *sctx, unsigned int digest_sz)
		{
		memset(sctx, 0, sizeof(*sctx));
		sctx->md_len = digest_sz;
		sctx->rsiz = 200 - 2 * digest_sz;
		sctx->rsizw = sctx->rsiz / 8;
		}

		static int sha3_224_init(struct shash_desc *desc)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);

		sha3_init(sctx, SHA3_224_DIGEST_SIZE);
		return 0;
		}

		static int sha3_256_init(struct shash_desc *desc)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);

		sha3_init(sctx, SHA3_256_DIGEST_SIZE);
		return 0;
		}

		static int sha3_384_init(struct shash_desc *desc)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);

		sha3_init(sctx, SHA3_384_DIGEST_SIZE);
		return 0;
		}

		static int sha3_512_init(struct shash_desc *desc)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);

		sha3_init(sctx, SHA3_512_DIGEST_SIZE);
		return 0;
		}

		static int sha3_update(struct shash_desc desc, const u8 data,
		unsigned int len)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);
		unsigned int done;
		const u8 *src;

		done = 0;
		src = data;

		if ((sctx->partial + len) > (sctx->rsiz - 1)) {
		if (sctx->partial) {
		done = -sctx->partial;
		memcpy(sctx->buf + sctx->partial, data,
		done + sctx->rsiz);
		src = sctx->buf;
		}

		do {
		unsigned int i;

		for (i = 0; i < sctx->rsizw; i++)
		sctx->st[i] ^= ((u64 *) src)[i];
		keccakf(sctx->st);

		done += sctx->rsiz;
		src = data + done;
		} while (done + (sctx->rsiz - 1) < len);

		sctx->partial = 0;
		}
		memcpy(sctx->buf + sctx->partial, src, len - done);
		sctx->partial += (len - done);

		return 0;
		}

		static int sha3_final(struct shash_desc desc, u8 out)
		{
		struct sha3_state *sctx = shash_desc_ctx(desc);
		unsigned int i, inlen = sctx->partial;

		sctx->buf[inlen++] = 0x06;
		memset(sctx->buf + inlen, 0, sctx->rsiz - inlen);
		sctx->buf[sctx->rsiz - 1] \|= 0x80;

		for (i = 0; i < sctx->rsizw; i++)
		sctx->st[i] ^= ((u64 *) sctx->buf)[i];

		keccakf(sctx->st);

		for (i = 0; i < sctx->rsizw; i++)
		sctx->st[i] = cpu_to_le64(sctx->st[i]);

		memcpy(out, sctx->st, sctx->md_len);

		memset(sctx, 0, sizeof(*sctx));
		return 0;
		}

		static struct shash_alg sha3_224 = {
		.digestsize = SHA3_224_DIGEST_SIZE,
		.init = sha3_224_init,
		.update = sha3_update,
		.final = sha3_final,
		.descsize = sizeof(struct sha3_state),
		.base = {
		.cra_name = "sha3-224",
		.cra_driver_name = "sha3-224-generic",
		.cra_flags = CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize = SHA3_224_BLOCK_SIZE,
		.cra_module = THIS_MODULE,
		}
		};

		static struct shash_alg sha3_256 = {
		.digestsize = SHA3_256_DIGEST_SIZE,
		.init = sha3_256_init,
		.update = sha3_update,
		.final = sha3_final,
		.descsize = sizeof(struct sha3_state),
		.base = {
		.cra_name = "sha3-256",
		.cra_driver_name = "sha3-256-generic",
		.cra_flags = CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize = SHA3_256_BLOCK_SIZE,
		.cra_module = THIS_MODULE,
		}
		};

		static struct shash_alg sha3_384 = {
		.digestsize = SHA3_384_DIGEST_SIZE,
		.init = sha3_384_init,
		.update = sha3_update,
		.final = sha3_final,
		.descsize = sizeof(struct sha3_state),
		.base = {
		.cra_name = "sha3-384",
		.cra_driver_name = "sha3-384-generic",
		.cra_flags = CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize = SHA3_384_BLOCK_SIZE,
		.cra_module = THIS_MODULE,
		}
		};

		static struct shash_alg sha3_512 = {
		.digestsize = SHA3_512_DIGEST_SIZE,
		.init = sha3_512_init,
		.update = sha3_update,
		.final = sha3_final,
		.descsize = sizeof(struct sha3_state),
		.base = {
		.cra_name = "sha3-512",
		.cra_driver_name = "sha3-512-generic",
		.cra_flags = CRYPTO_ALG_TYPE_SHASH,
		.cra_blocksize = SHA3_512_BLOCK_SIZE,
		.cra_module = THIS_MODULE,
		}
		};

		static int __init sha3_generic_mod_init(void)
		{
		int ret;

		ret = crypto_register_shash(&sha3_224);
		if (ret < 0)
		goto err_out;
		ret = crypto_register_shash(&sha3_256);
		if (ret < 0)
		goto err_out_224;
		ret = crypto_register_shash(&sha3_384);
		if (ret < 0)
		goto err_out_256;
		ret = crypto_register_shash(&sha3_512);
		if (ret < 0)
		goto err_out_384;

		return 0;

		err_out_384:
		crypto_unregister_shash(&sha3_384);
		err_out_256:
		crypto_unregister_shash(&sha3_256);
		err_out_224:
		crypto_unregister_shash(&sha3_224);
		err_out:
		return ret;
		}

		static void __exit sha3_generic_mod_fini(void)
		{
		crypto_unregister_shash(&sha3_224);
		crypto_unregister_shash(&sha3_256);
		crypto_unregister_shash(&sha3_384);
		crypto_unregister_shash(&sha3_512);
		}

		module_init(sha3_generic_mod_init);
		module_exit(sha3_generic_mod_fini);

		MODULE_LICENSE("GPL");
		MODULE_DESCRIPTION("SHA-3 Secure Hash Algorithm");

		MODULE_ALIAS_CRYPTO("sha3-224");
		MODULE_ALIAS_CRYPTO("sha3-224-generic");
		MODULE_ALIAS_CRYPTO("sha3-256");
		MODULE_ALIAS_CRYPTO("sha3-256-generic");
		MODULE_ALIAS_CRYPTO("sha3-384");
		MODULE_ALIAS_CRYPTO("sha3-384-generic");
		MODULE_ALIAS_CRYPTO("sha3-512");
		MODULE_ALIAS_CRYPTO("sha3-512-generic");

include/crypto/sha3.h

0 → 100644

+29 −0

Original line number	Diff line number	Diff line
		/*
		* Common values for SHA-3 algorithms
		*/
		#ifndef __CRYPTO_SHA3_H__
		#define __CRYPTO_SHA3_H__

		#define SHA3_224_DIGEST_SIZE (224 / 8)
		#define SHA3_224_BLOCK_SIZE (200 - 2 * SHA3_224_DIGEST_SIZE)

		#define SHA3_256_DIGEST_SIZE (256 / 8)
		#define SHA3_256_BLOCK_SIZE (200 - 2 * SHA3_256_DIGEST_SIZE)

		#define SHA3_384_DIGEST_SIZE (384 / 8)
		#define SHA3_384_BLOCK_SIZE (200 - 2 * SHA3_384_DIGEST_SIZE)

		#define SHA3_512_DIGEST_SIZE (512 / 8)
		#define SHA3_512_BLOCK_SIZE (200 - 2 * SHA3_512_DIGEST_SIZE)

		struct sha3_state {
		u64 st[25];
		unsigned int md_len;
		unsigned int rsiz;
		unsigned int rsizw;

		unsigned int partial;
		u8 buf[SHA3_224_BLOCK_SIZE];
		};

		#endif

Admin message